Installation
2-7
3360-A2-GB20-20
December 1996
Installing the Redundant –
48 Vdc Power
Supply
To install the E1 NTU using a redundant – 48 Vdc
power supply, refer to
Figure 2-11
and use the following
procedure.
To install the redundant – 48 Vdc power supply,
1. Connect the black wire to the – 48 Vdc return
source B.
2. Connect the red wire to the – 48 Vdc return
source A.
3. Connect the green wire to a suitable earth ground.
4. Connect the orange wire to the – 48 Vdc input
source B.
5. Connect the blue wire to the – 48 Vdc input
source A.
6. Cut the white wire off at the outer insulation.
7. Plug the power connector into the E1 NTU.
1
2
3
4
5
6
BLACK
RED
GREEN
WHITE
ORANGE
BLUE
– 48 VDC RETURN B
– 48 VDC RETURN A
EARTH GROUND
– 48 VDC INPUT B
– 48 VDC INPUT A
495-14745
X
NTU POWER
PLUG
TO CUSTOMER-SUPPLIED BATTERY
CABLE NUMBER 3100-F1-520
Figure 2-11. –
48 Vdc Redundant Source Power Supply Pinouts
